/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import React from 'react';
import { Encoder, EncodingConfig, Dataset } from 'encodable';
import { LegendHooks } from './types';
import DefaultLegend from './DefaultLegend';

export default function createRenderLegend<Config extends EncodingConfig>(
  encoder: Encoder<Config>,
  data: Dataset,
  props: LegendHooks<Config>,
) {
  if (encoder.hasLegend()) {
    const {
      LegendRenderer = DefaultLegend,
      LegendGroupRenderer,
      LegendItemRenderer,
      LegendItemLabelRenderer,
      LegendItemMarkRenderer,
    } = props;

    return () => (
      <LegendRenderer
        groups={encoder.getLegendInformation(data)}
        LegendGroupRenderer={LegendGroupRenderer}
        LegendItemRenderer={LegendItemRenderer}
        LegendItemMarkRenderer={LegendItemMarkRenderer}
        LegendItemLabelRenderer={LegendItemLabelRenderer}
      />
    );
  }

  return undefined;
}
